baber/WOPTO huggingface dataset:
Patent GB-946989-A (GB)
Title: Organic boron compounds
Inventor: TURNER HAROLD SILAS
IPC: C10L1/30
Filed: 1961-03-11
Abstract: The invention comprises a borazocine of the formula: <FORM:0946989/C2/1> wherein at least one Y substituent is an isothiocyanate, isocyanate, isoseleno-cyanate or azide group, and each remaining Y substituent, if any, is chlorine or bromine, and wherein R is an aliphatic group of the type:-R1.C(R2)(R3)-wherein R1, R2 and R3 are each a straight-chain or branched alkyl group the branch of said branched alkyl group not being attached to the carbon atom adjacent the tertiary carbon atom; or wherein R3 is such a straight-chain or branched alkyl group and R1 and R2 form part of a reduced six-membered ring.  The novel borazocines are made by reacting a haloborazocine, wherein Y is chlorine or bromine, in the presence of an inert organic polar diluent with a salt capable of providing under the conditions of the reaction an azide or isocyanate, isothiocyanate or iso-selenocyanate group, or with more than one such salt. Suitable salts are the alkali metal or heavy metal thiocyanates, cyanates and selenocyanates and alkali metal azides or complex salts containing these anions, such as ammonium, phosphonium or arsonium salts.  The process is preferably effected in the absence of air and under substantially anhydrous conditions, at 100 DEG C. under reflux. The Provisional Specification also describes the preparation of borazocines in which Y represents cyanide, nitrite or vinyl, substituted vinyl, ethynyl and substituted vinyl radicals by reacting the corresponding salts or organo-metallic compounds with the halo-borazocine. Specification 937,430 is referred to.
Patent GB-1203751-A (GB)
Title: Improvements to electronic image transformer apparatuses
Inventor: LAURENT BERNARD
IPC: H01J31/50
Filed: 1966-03-01
Abstract: 1,203,751. Local viewing. B. LAURENT. 1 March, 1966 [5 March, 1965], No.9032166. Heading H4F. To provide an image of an illuminated object, light, either visible or infra-red, from the object is incident upon an electron emitting surface. The resultant electron emission is focused to form an image on a fluorescent screen. The suppression of the effect of a continuous extraneous light source is effected by illuminating both the object and the electron emitting surfaces from light sources of different frequencies and filtering the resultant current so as to pass only the beat frequency signals. Light from the object 18, is directed on to the photoconducting or photo-electric layer, 2, supporting the electron-emitting elements 3. 18 is illuminated from the modulated source 13, and the elements 3, are illuminated by ultra-violet light from, 9, modulated at a frequency different from that of 13. The resultant beat frequency signals are passed by the filter, 12, and an image of 18 formed on the screen 8. The effect of light scattering between 18 and the tube 19 is counteracted by introducing an adjustable time lag between the modulated sources, 9, 13.
Patent GB-777167-A (GB)
Title: A new or improved warning reflector for use on pedal cycles
IPC: B62M3/12
Filed: 1955-03-29
Abstract: 777,167. Reflex reflectors. WILLETTS, E., and WILLETTS, E. G. March 27, 1956 [March 29, 1955], No. 9089/55. Class 3 (2). A U-shaped strip 2 carrying reflex reflectors 3 is adapted to be mounted on either a cycle pedal of the rat trap type or of the all-rubber type by screws 4 or by self tapping screws respectively, the screws 4 passing through the side plates of the pedal and engaging tapped holes in retaining plates located thereagainst, see Fig. 2 (not shown). The pedal is made of plastic material or aluminium and may be weighted to locate the reflectors in the desired position. The reflectors may be coloured and arranged as necessary and the strip may be painted red, amber or white to act as a daylight warning device.
Patent GB-373708-A (GB)
Title: Improvements in alloys containing tantalum carbide
IPC: C22C29/06
Filed: 1931-03-25
Abstract: Tantalum carbide is made by mixing powdered tantalum or tantalum oxide with carbon which has been purified by heating, and highly heating the mixture.ALSO:A hard alloy, particularly for tools, consists of 3-15 per cent of one or more of the metals iron, nickel, and cobalt, and the remainder tantalum carbide, with or without free tantalum.  For example, the alloy may consist of 10 per cent of nickel and the remainder tantalum and carbon in the proportion of 94,25 to 5,75.  Tantalum carbide is made by mixing powdered tantalum or tantalum oxide with carbon which has been purified by heating, and highly heating the mixture.  The resulting carbide is finely powdered, mixed with hydrogen-reduced iron, nickel, or cobalt powder, and the mixture is very finely ground and subjected to high pressure, the product being heated at 1350-1400 DEG  C.
Patent GB-947372-A (GB)
Title: Improvements in or relating to separating devices
IPC: B07B4/08
Filed: 1959-03-16
Abstract: 947,372. Screening apparatus. H. C. ROTHERY. June 16, 1960 [March 16, 1959 (2)], Nos. 9098/59 and 9099/59. Heading B2H. The apparatus is of the kind described in Specification 931,152, and includes a tubular housing 2, with a perforated part 11 extending over the whole or part of its length, which houses a screw conveyer 1 mounted at one end on a bearing on a head plate 8 detachably attached to the housing. During passage of granular material from the inlet end of the housing to the outlet 14 at the opposite end, the smaller particles are received in a trough 17 attached to a casing 15, and fall from its lower end. The perforated section may be replaced by a section of different perforation size ; different sections of the housing may have perforations of different aperture size, so that materials of different size may be received at those sections. Each section may comprise two concentric cylindrical members each having perforations of the same or different size, the resulting perforations being varied in size by relatively rotating the members.
Patent GB-684146-A (GB)
Title: Improvements in or relating to electric conduit systems in buildings
IPC: H02G3/06
Filed: 1951-04-20
Abstract: 684,146. Conduits. BIESTA, D. J. H., and SCHMIDT, W. April 20, 1951 [May 4, 1950], No. 9248/51. Class 36. [Also in Group XXXV] A prefabricated conduit system comprises a central conduit box 1 having a number of tubular conduits connected thereto, each comprising rigid lengths 7 and flexible lengths 6 and enclosing insulated conductors 10 which are accessible at both ends of the tubes. The flexible portions 6 permit the conduit to be folded into a bundle for easy transportation. Each conduit terminates with a flexible portion to which terminal boxes 8 may be secured, or in which insulating tubing 9 may be inserted for the protection of protruding conductors 10. The flexible portions may be connected to the rigid portions and to tubular studs 4 on boxes 1 and 8 as by screwing. The tubes 6 and 7 may be made of metal or plastic material.
Patent GB-476018-A (GB)
Title: Improvements in or relating to thermionic valve circuits
IPC: H03F1/36
Filed: 1937-04-01
Abstract: 476,018. Valve amplifying and detecting circuits. STANDARD TELEPHONES & CABLES, Ltd. April 1, 1937, No. 9299. Convention date, April 1, 1936. [Class 40 (v)] In a valve the control grid of which is driven to values below the value cor. responding to plate current extinction negative feedback is provided to reduce distortion. The feedback for an amplifier includes alternating current components and for a rectifier both direct current and the alternating current components. Fig. 1 shows a pentode biassed by a source 8 to substantially zero anode current and having feedback over a path 6 across a resistance 7 in series with the input. In the position of the switches 10, 11 shown the valve operates as a linearized rectifier or when the condenser 12 is inserted as an amplifier. The insertion of a filter 13 in the feedback path to suppress higher harmonics gives increased reduction of second and third harmonics and reduced negative peaks of grid swing. Fig. 2 shows a method of obtaining feedback across two stages. Fig. 3 shows valves A B C in cascade with bridge arranged input and output circuits, the bridge may not be balanced. Variable resistance 85 adjusts the feedback, while condensers 90, 91 reduce the tendency to sing round the loop. Large negative peaks of grid swing to the valve C may be avoided by a rectifier 93 which may be of the copper-oxide type so that overload of the amplifier B is avoided since the load impedance for negative peaks is reduced. If a valve, such as a pentode having an accelerating grid biassed positive is employed a large negative bias can be applied to the control grid so that the upper portion of the dynamic characteristic is substantially extended to its theoretical maximum without impairing the lower end or driving the control grid positive. A valve having a co-planar grid may be used. The Speci. fication discusses both the efficiency at full load and the all-day efficiency of both single sided and push-pull amplifiers operated in classes A, B and C, i.e. with bias to mid-point, cut-off, and beyond cut-off.
Patent GB-1512593-A (GB)
Title: Elastic surface wave filter
IPC: H03H3/08
Filed: 1976-03-09
Abstract: 1512593 Surface wave devices MURATA MFG CO Ltd 9 March 1976 [13 March 1975 (3)] 09338/76 Heading H3U A surface wave filter device comprising a substrate 10, transducers El, E2 with terminals 13a-14b and a cover 17, is enveloped in a protective covering 21, e.g. of glass or synthetic resin, through which the terminals extend. The terminals may lie along the surface of the substrate or they may extend through it (Fig. 5, not shown). The chamber formed by cover 17 and substrate 10 may be filled with nitrogen. The cover may be constituted by a flat plate 17', Fig. 9, and a rubber spacing member 20 which effects wave-damping. Damper material 21a, 21b may also be applied to cover 17, and a damper plate (22, Fig. 13, not shown) and/or a support plate (23) may be provided beneath substrate 10. Reference has been directed by the Comptroller to Specification 1389610.
Patent GB-461219-A (GB)
Title: Process for deinking paper printed with oxidizable inks
IPC: D21C5/02
Filed: 1936-03-30
Abstract: Paper, imprinted with an ink having an oxidizing oil constituent, is de-inked by a process consisting in shredding the paper, dissolving out its size constituent by a suitable alkaline liquor, i.e. one containing caustic soda or equivalent slightly in excess of the amount required to saponify the size and linseed oil present, e.g. 40--60 lbs. caustic soda and 13--25 tons of water per ton of air-dried paper, removing the liquor and maintaining the shreds in loose condition moist with a weak alkaline solution, i.e. one containing about 20 lbs. of caustic soda or its equivalent and 18--25 tons of water per ton of air-dried paper, and exposed to air until brown spots appear on the shreds, then covering the shreds with weak alkaline solution to prevent further direct contact with the air, until the ink particles are readily detached by slight brushing, i.e. for about 48 hours, and defibreizing the shreds and removing the ink particles therefrom by any convenient further treatment, e.g. by washing or by flotation, as described in Specification 441,331, in which case the soap content due to saponification of size and linseed oil should be reduced to flotation requirements before defibreizing. The first step is preferably carried out at a temperature of 200 DEG F.  In a modification, instead of exposing the moist shreds to the action of air, they may be covered with a weak alkaline solution which is oxygenated, e.g. by passage of air under pressure therethrough.  In this case, the weak alkaline solution is obtained by using in the first step a solution containing 60 lbs. NaOH and 13--25 tons of water per ton of air-dried paper, and after draining this off, adding 18--25 tons of water per ton of air-dried paper. With a lukewarm solution the second step is completed in 45 minutes. Defibreization is suitably accomplished by vigorous agitation in a tank equipped with a ship propeller type of agitator.
Patent GB-1534353-A (GB)
Title: Control systems for navigable craft
IPC: G05D1/00
Filed: 1976-03-10
Abstract: 1534353 Automatic control systems SPERRY RAND CORP 10 March 1976 [17 March 1975]  09460/76 Headings G3N and G3R A system for controlling the movement of an attitude control surface in a navigable craft comprises two indentical servo channels whose outputs are algebraically summed, each having respective positional feedback circuits whereby movement caused by a failure in one channel tends to be compensated by movement of the other channel, and controlled by a common command source via respective limiters which minimize undesired movements of the craft in the event of failure in the command source. The system may be applied to marine or space craft but is described in terms of the pitch or roll control of an aircraft and the summation is performed by a mechanical differential gear. There are separate limiters for magnitude and rate, and for pitch control the latter are automatically adjusted in accordance with the prevailing load factor on the aircraft, determined by normal accelerometers and biasing circuits Fig. 1b, (not shown). The complete limiting circuit includes an integrator, the ouput of which tracks the command input, subject to the rate limit and up to the magnitude limit. The servos also have rate feedback from tachogenerators in each channel; their outputs are compared and the result applied so as to equalize the servo speeds, but through further limiters which become effective if one channel fails. The generator outputs are also compared in polarity with that of the accelerometers; if they disagree, and if the load factor reaches a predetermined value a fault is indicated and the output of the faults channel is locked by an electromagnetic brake. A time delayed alarm system is provided, operated by any difference between the input and output of the limiters.
Patent GB-690969-A (GB)
Title: Improvements in tubulous natural circulation vapour generators
IPC: F22B37/22
Filed: 1951-04-24
Abstract: 690,969. Water-tube steam boilers &c. BABCOCK & WILCOX, Ltd. April 24, 1951 [April 25, 1950], No. 9485/51. Class 123 (ii) In a natural circulation steam boiler having parallel steamgenerating circuits with dissimilar thermo-syphon flow characteristics, for example groups of riser tubes 145, 149 respectively, extending from a low water drum 143 to upper steam-and-water drums 147, 148, the drum 143 is provided with a perforated baffle 173 adapted to control the flows through one or both of said tube groups. The invention is shown applied to a boiler having a furnace chamber with wall tubes such as 165 extending from a header 167 to the drum 143 and down-comers 146, 168, the former connecting the drums 148, 143 and the latter the drum 143 and header 167, in which case the drum 143 is also fitted with an imperforate partition 171 which divides the drum into riser and downflow paths 172, 172<SP>1</SP>. The arcuate wall 174 of the baffle 173 is adapted to be replaceable, and the perforations thereof are staggered with respect to the inlets of the tubes 145. In a modification the partition 171 extends over some of the tubes 146, when these serve as risers, and the partition 171 is formed with a radial rib to divide the interior space into two separate chambers opening to the inlets of the riser tubes 145 and 149 respectively.
Patent GB-622798-A (GB)
Title: Vaginal irrigator
IPC: A61M29/00
Filed: 1947-04-10
Abstract: 622,798. Surgical irrigators. LEU, J. A April 10, 1947, No. 9580. Convention date,. April 25, 1945. [Class 81(ii)] An irrigator, having a dilator surrounding a nozzle, has a setting member movable in an axial direction in relation to the nozzle so as to determine the depth of penetration. A cylindrical member d supports the pivoted dilating arms c around the nozzle a and they are opened by turning a nut f which draws a block e and connecting links e<SP>1</SP> downwards. The setting member g, in the form of a shield, has a cylindrical extension with slots g<SP>2</SP> engaging screws h so that it can be set in relation to the nozzle and held in position by tightening the screws. A draining tube i may be provided for the shield.
Patent GB-477982-A (GB)
Title: Machine elements of high resistance to corrosion fatigue
IPC: C22C38/14
Filed: 1936-04-01
Abstract: Machine elements highly resistant to corrosion fatigue are made of a steel containing 0,05-0,30 per cent of zirconium.  The steel may also contain one or both of the elements aluminium and titanium in a quantity up to 0,3 per cent for each element, and also up to 5 per cent of one or more than one or all of the elements nickel, cobalt, chromium, tungsten, vanadium, and molybdenum.  Reference has been directed by the Comptroller to British Specifications 210,388, [Class 82 (i)], and 394,396, [Group XV], and French Specification 757,983.
Patent GB-141691-A (GB)
Title: Improvements in apparatus for shearing metal sheets
IPC: B23D31/00
Filed: 1920-04-06
Abstract: 141,691. Lamb, H. W. April 15, 1919, [Convention date]. Shearing; metal sheet feeds.-Metal sheets are squared by feeding between rotary edge-cutters 13, 14 by rolls 10, 17, 190 as described in Specification 100,247, and then while resting on bars 60 the ends are trimmed by guillotine blades 23. These are operated by eccentrics 24, shafts 30, 34, gearing 32, 38, shaft 36, pawl 40, Fig. 2, and internal ratchet 42 driven by a belt 44. The pawl is normally kept out of engagement by a spring 55 and lever 46, but when a sheet strikes the stop 50 the lever 46 is withdrawn, the pawl engages the ratchet and the shear-blades trim the ends, fingers 70 knocking down the cut-off strips. The bars 60 carry a guide 66 for the sheet, which slides off when the supports 62, Fig. 6, are lowered by a treadle 64, Fig. 3, and shaft 63.
Patent GB-1015783-A (GB)
Title: Improvements in the manufacture of polymeric aromatic compounds
Inventor: GOLDEN JOHN HENRY
IPC: C07C13/32
Filed: 1961-03-16
Abstract: The new compounds, cyclic di-(anthrylene-9:10-dimethylene) and its derivatives are prepared by reacting a 9:10-di-(halogeno-methyl) anthracene with a metal iodide in a solvent at not more than 100 DEG C. and crystallizing the product. Suitable starting materials are 9:10-di-(bromo- or chloro-methyl)anthracene which may be heated with an alkali metal iodide or magnesium iodide in acetone or methyl ethyl ketone under reflux.ALSO:Poly - (- 9: 10 - anthrylene - ethylene -) is obtained by heating cyclic bi-(anthracene-9: 10-dimethylene), e.g. at 150 DEG  C. in naphthalene. The starting material may alternatively be heated alone or in nitrobenzene, aniline or xylene. The polymer is insoluble in organic solvents and unaffected by heat up to 300 DEG C.
Patent GB-558640-A (GB)
Title: Improvements in wiper devices for windscreens of motors and the like
IPC: B60S1/34
Filed: 1942-07-10
Abstract: 558,640. Windscreen cleaners. TRICO PRODUCTS CORPORATION. July 10, 1942, No. 9647. Convention date, Aug. 14, 1941. [Class 138 (i)] A windscreen wiper arm having an inner portion 23 connected to an actuating shaft 12, and an outer wiper-carrying portion 14 pivotally connected to the inner portion and urged towards the screen by a leaf spring 35, 36 anchored to a channel-shaped member 17, pivoted about a pivot 33 on the fixed inner portion, the spring pressing on a fixed abutment 40, 41 so as to produce a reaction tending to move the arm 14 clockwise is constructed, so as to enable the pressure of the wiper on the screen to be varied, with auxiliary means which resiliently bears on the leaf spring 35, 36. The auxiliary means is formed of a leaf spring 50 anchored by means of a clamp 52 against the anchorage of the first spring to the channel-shaped member 17, and bearing on the spring 35, 36 at a point beyond the abutment 41. By means of a screw 55 the pressure of the auxiliary spring can be varied. The device may be formed as an attachment which can be applied to existing wiper arms of the type set forth. The invention can be applied to sliding as well as oscillating wiper arms.
Patent GB-797362-A (GB)
Title: Improvements in holders for sacks, bags and the like
IPC: A01F12/50
Filed: 1955-04-02
Abstract: 797,362. Sack holders. LAVERICK, J. June 28, 1956 [April 2, 1955], No. 9667/55. Class 58.  A sack holder comprises plungers 5 secured to levers 3 mounted on pivots 4 on a plate 1 to which are secured apertured lugs 12. The levers 3 are connected by links 7 to a lever 6 pivotally mounted on the plate and actuated by a handle 8. When the lever 6 is turned to bring the links 7 into a locking position, in which they lie substantially along a straight line through the fulcrum of the lever 6, the levers 3 are swung to bring the plungers 5 into the apertures in the lugs 12 to grip an intervening sack. When the lever 6 is turned in the opposite direction to move the links out of alignment and towards each other, the levers 3 are swung to withdraw the plungers from the apertures and release the sack. The sack holder may be constructed so that, for a given swing of the lever 6, one lever 3 is swung through the same angle as the other lever 3, but in an opposite direction. The handle may be shaped so that, when the links are in the locking position, its weight tends to keep them in that position. Alternatively, the handle may be urged by a spring towards a locking position. A stop 11 may be provided on the plate to prevent the adjacent lever 3 and link 7 from moving into alignment. The sack holder may be secured to the front of a delivery shoot, as by a strap, Figs. 4 and 6 (not shown), and the shoot or strap may carry, at the rear, sacksupporting spikes or projections. Two sack holders may be mounted side-by-side near two outlets from a hopper, Fig. 5 (not shown), and the outlets may be provided with sliding closure plates connected by a lever so that one outlet is closed when the other is opened. Specification 688,694 is referred to.
Patent GB-1127023-A (GB)
Title: Process for preparing pyridoxine and derivatives thereof
Inventor: FABRUCCI ALDO
IPC: C07D213/73
Filed: 1965-03-08
Abstract: 1,127,023. Pyridoxine and derivatives thereof. LEPETIT S.p.A. GRUPPO PER LA RICERCA SCIENTIFICA E LA PRODUZIONE CHIMICA FARMACEUTICA. 2 March, 1966 [8 March, 1965], No. 9732/65. Headings C2C and C2V. Pyridoxine and derivatives thereof of formula where R is hydroxy, acyloxy or amino, R<SP>1</SP> is an alkyl radical and X is hydrogen or halogen, are obtained by adding a solution of 1 to 2 moles of sodium borohydride in an alkanol to a mixture in an alkanol of 0À5 to 2 moles of calcium chloride and one mole of a compound of formula where R, R<SP>1</SP> and X are as above, at 10 to 60 C. In examples pyridoxine, 2-methyl-3- amino - 4,5 - dihydroxy - methylpyridine and 2 - methyl - 3 - amino - 4,5 - dihydroxymethyl- 6-chloropyridine are prepared.
Patent GB-259484-A (GB)
Title: Improved means for securing window sashes
IPC: E05F11/00
Filed: 1926-04-13
Abstract: 259,484. Hardy, H. H. April 13, 1926. Fastenings for sliding windows.-A device for securing windows in open or closed position comprises a lever latch pivoted on the upper sash in a plate in which it is normally flush and from which it is released by pressure to engage the lower sash. Fig. 2 shows the lever latch a pivoted in lugs c' on a plate secured to the upper sash. Normally it is retained in the position shown in dotted lines by a spring bolt in the housing c3. The latch is pressed past the bolt into the position shown in full lines, where it engages a rack f on the lower sash. In a modification, the latch is automatically pressed outwards into operative position, and is normally retained by a lateral catch n, Fig. 7. The rack f may be set vertically on the meeting rail of the lower sash.